To know that the 13 finch species that inhabit the Galápagos are descended from a common ancestor,
biologists had to rely on ____.
a. Darwin's notebooks describing his observations
b. comparative molecular biology
c. comparative embryology
d. Mendelian genetics
e. modern historical biogeography and Darwin's observations
B
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Blocking polyomavirus SV40's ability to integrate its genome into host cells would
A) avoid cancer development from the virus. B) increase the rate of transformation. C) increase the latent period of SV40. D) switch SV40 into a lytic lifecycle which would be especially harmful to the host cells.
Explain how, when improper base pairing escapes repair by the proofreading system, cells are able to detect and repair mutations
What will be an ideal response?
In choosing the vector used to carry human genes into a host cell, which of the following should be the important consideration?
A. Whether the vector contains RNA or DNA B. Whether the vector comes from a bacterium or a virus C. What kind of plasmid it is D. How much donor DNA can be carried on the vector
Which of the following would be considered a carrier of a sex-linked recessive defect?
a. a man with the defect b. a woman with the defect c. a father of a son with the defect d. the normal daughter whose father had the defect e. a son of two unaffected parents